Feeder for thrashers



July 1, 1930. JOHNSON ET AL 1,768,985

FEEDER FORTHRASHERS Filed oct'. 16, 1929 2 Sheets-Sheet 1 a r I l July1, 1930.

A. E. w. JOHNSON ET AL FEEDER FOR THRASHERS Filed o t. 16, 1929 2Sheets-Sheet 2 zzfrjoizns'an/ flrnzzfzlfesgmaq i9 W s9 f d tf A PatentedJuly 1, 1930 uNITEosTATEs PATENT OFFICE RNOLD E. w. JOHNSON nNnAnNr w.wnss vmN, or CHICAGO, rLmNors, AssIeNon-s mo INTERNATIONAL HARVESTEB.COMPANY, .A CQRPORATION on NEW JERSEY FEEDER FOB THRASHEBS 4 Applicationfiled October 16,1929. Serial No. 399,940;

The invention is in the art of thrashing and relates .especially toimprovements 1Il feeders for thrashing machines.

Thesev feeders, have become standardized and comprise a feedervconveyer'fonmoving.

bundles of grain into the thrasher. oooperg ating with the conveyer areband cutting knives and straw-rakedevices 'Theseknives and rakes arecarriedand actu'ated'by a crank shaft. The rakes may float upwardly toConform with a large increment of material, and if such float,isextreme, arockshaftis caused to be rocked,.which in turn actuates atrip that controls a clutch'to stop. the drive to the main conveyer, sothat temporarily no more material will be fedby thev feeder. Therockshaft must be rocked against the force of a spring ora weightedarm,.so.that the rakes automatically may return to normalworking,

position, and so that the clutch trip maybe automatically'rei'noved toresume op'eratlon of" the feeder. The crank shaft mentioned travels athigh'speed and therockshaft is rocked frequently to perform .theregulatory function mentioned. This results in much objectionablevibration that interferes with the steady, even feed of material totheth-rasher; Thisvibrationin the crank and rock shafts is, of courseobjectionable fora good many other reasons, and, therefore,- it

is highly desirable that the samebeeliminat ed, or,;a't= least,considerably minimizedl '1 Accordingly, it is the main objectof thisinvention to provide a stabilizer, or vibration damper, for use inconnectionwith a thrasher feeder mechanism. x

' .f. Generally, itiis an object of the inventionlto improve theoperation; ofjbandcutters and feeders for thrashers.

Other. objects will". become 7 known has .the disclosure is made.

Briefly, these desirable ects I by providing springpre'ssed.friction"mem bers thatiact. on therockshaft to stabilize thesame,"thereby damping vibration th reof and offits connected parts.

- In the drawings. illustrating one practicableformQofthe invention,- f

. ti'ate theifeeder mechanism;

FigureBfis a side View showing the exterior drive and control mechanism;V

Figure 45, isa plan, detail view, partly in section, of the stabilizer;and,

i Figures 5 and 6 are detail views of thereoperable friction elementsemployed in the stabilizer. I

The self feeder shown, as in standard practice, comprises a housing 710,in the lower front? end; of which is arranged the feeder conveyer-ll,driven from a shaftlQ. ;The thrashingkcylinder appears at 13, andbetween" it and the discharge end of the conveyer 11 is the retarder 14.At the front,upper end of the ho using is a transverse crank shaft 15which carries and operates 'with reciprocatorymovement in the orbitalpaths, the band cutter knife members 16, which have their rearendscarried by links 1? corn nected pivotally. in the block 18 at the top ofthe housing. I

wardly extending arms 20, each of which;

pivotally carriesa-depending link 21. Each link 212has its lower endpivotally connected in a block 22,.said blocks carrying rake elei Inents23 which are rigidly connected at their fore described.

-. c The shaft15'maybe driven from a pulley 24E; 5 This. turns asprocket wheel '25 (see front ends to the knifemembers 16, hereto-Figure 3 to, drive a chain 26, trained around aflspro'cket wheel 27,-andanother sprocket:

wheel 28, which drives a shaft 29 to operate thef retarderlfle, alreadymentioned- This chain also "drives. a large, loosely mounted sprocketfwheel 3 0, connectible and disconnectible, as usual in these feeders,relative to a clutohpart31- fast on the conveyer shaft 12.'Th'islpartiembodies the usual stop shoulde'rs 32 thatkcooperate witha'trip 33 slid- 1 V T able throiighjl'a guide 34, whichismounted aweighted arm 35'carried on the rockshaft 0n the housing '10. i The guideis connected to r .9 Weeds the ewith-I t 3 P i liz'er has been to bemoved downwardly into the path of movement of the clutch part 31 Whenthe trip is'contacted by a shoulder 32, the clutch part and shaft" 12 restopped' toihold the conveyer 19 idle. The rakes 23, off course,continue to feed to the cylinder 13, and as soon as the bunched materialhas been disposed of, the rakes 23 return to normal p051 tion. Likewise,the weighted arm movesto free the trip from the clutch part-to causeresumption of the movement for the ffeeder 19. firs the rakes 23, knives16, and shaft operate at high speed, considerable vibration results.Likewise, the reeated operation of the rockshaft 19 causes t e weightedarm to hammer on its rest 36. To overcome the vi bration and hammeringdescribed, a stabi- I, provided, which will next be described. 7 I ISubstantially midway between the ends of the rockshaft 19, is made "fasta sleeve 37 hav-' ing a'circular fia gees provided with a rim'Encir'clihg the sleeve is a s ring 40, the

tension of which may be varied by nut 41 movable along a threaded I'ortio'n '42 in an obvious manner. Another isk 43 surrounds thesleeveand is pressed flatly against the flange 38 bythe spring, saidspring nesting within the seat 44 pr'ovidedfon the disk 43 for thatpurpose. The disk 43 je'mbo'dies an 10. V I M p I hus, in effect, areprovided two frictionelements comprising "the stationary disk 43extension 45 to which'i's seeuredanar m.46, said arm, as best shown inFigure '2, being mad fast at 47 to the roof of the housing and theturnable disk or flange38. The frietifonal engagement between adjacentfaces of these may be v'ari'ed by alteringthe tension of the spring 40by means 'o'fthe 1111:2 41. This friction thus checks, 'or dam ens,vibration of the rockshaft' 19 and all movable parts, sueh'as'th'e rakes23, knives 16,'crank;

shaft 15, and weighted arm 35, connected therewith; Further, when theweight arm 3'5 isw'vorking tooeasily, or too quickly, the stabilizer maybe adjusted by the tightening nut 41', which causes said arm to returntoitjs normal positiongradually, and, 'asja result,

more uniform feeding can be obtained. I From the above description, theuse and operation of the stabilizer will nowbe clear.

Also, it can be appreciated that the strudture achieves all of thedesirable objects heretofore recited.

The scope of the invention is set forth in the following claims.

What is claimed is:

'1; In a feeder for thrashors, a housing, a plurality ofshafts in thehousing, rake devices connected to and operated by one of theshafts,,and a stabilizer associated with an: other of the shafts todampen vibration in the shafts and connected parts.

2. In 'a-vfeeder for thrashers, a housing, a plurality of shafts in thehousing, rake devices connected to and operated by one of the shafts,and a friction device associated with another of the shafts to stabilizethe shafts and connected parts against vibration 3. In a feeder forthrashers, a housing, a plurality of shafts in the housing, rake devicesconnected to and operated by one 'of the shafts, and a yieldablefriction device carried on another of the shafts to stabilize the shaftsand connected parts against vibration.

' 4. Ina feeder for thrashers, a housing, a plurality of shaftsin thehousing, rake devices connected to and operated by one of the shafts,and spring pressed friction disks carried on another of the shafts tostabilize the shafts and connected parts against vibration.

5. In a feeder for thrashers, ahousing, a crankshaft therein, arockshaft therein, rake and knife devices connected between the shaftwhena large mass of material is fed by the feeder, and a stabilizerassociated with the ro'ckshaftto dampen vibration in the shafts and'rakeand knife devices.

6. In a feeder for thrashers, a housing, a crank shaft therein, arockshaft therein, rake and lmif'e devices connected between the shafts,a feeder, means for rockingthe rockshaft when a large mass of materialis fed by the feed r, a weighted trip arm carried b the rockshaft, and astabilizer associated wit said rockshaft to dampen vibration in theshafts and connected parts. j

.7. Ina feeder for thrashe'rs,.a housing, a crank shaft therein, arockshaft therein, rake and knife devices connected between the shafts,a feeder, means for rocking the rock} shaft when a largemass of materialis fed by the feeder, a stabilizer to dampen vibration or the shafts andconnected parts, the

stabilizer comprising a disk fast on the rock- I and knife devicesconnected between the shafts, a feedeiymeans for. rocking the rockshaftwhen a largemass of material is fed Ilia by the feeder, a stabilizer todampen vibration of the shafts and connected 'parts,-the

stabilizer comprising a sleeve including'a disk fast on the roekshaft, asecond non-turnable disk on the shaft, a support in the housing for saidlatter disk, a spring to press the disks into frictional engagement, andmeansto vary the tension of the spring.

In testimony whereof :We aflix our signatures.

ARNOLD W. JOHNSON? ARNT W. WESSMAN, j i e v

